Cutter-head



(No Model.)

T. PITZSIMM'ONS,

CUTTER HEAD. No. 310,571. Patented Jan. 13, 1885.

L STATES Price.

PATENT CUTTER-AHEAD.

SPECIFICATION forming part of Letters Patent No. 310,571, dated January 13, 1885.

Application filed October 3, 1884.

.To LLZZ whom it may concern.-

Be it known that l, THOMAS Frrzsumioxs, a citizen of the United States, residing at Bun lington, in the county of Ohittenden and State of Vermont, have invented certain new and useful Improvements in Attachments of Cut ters and Plates to the Cylinders of Planing and Molding Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to the securing to a slotted square cylinder the plates and cutters for planing and molding machines; and the objects of my invention are, first, to provide a ready and reliable device by which one or more cutters of different widths and styles may be lirmly attached to the slotted square cylinder without the possibility of displacement, cit-her in the act of setting or operating the same; second, to so arrange the attachment to the cylinder that it is practically impossible for the plates or cutters to yield to any obstruction which may present itself in the act of working; and, third, to afford greater facility for keeping the plates and cutters in line on the cylinder, either in setting or operating them.

In the drawings, in which similar letters indicate like parts, Figure 1 is a perspective view of a slotted square cylinder on which is placed a double-novelty cutter and plate. Fig. 2 is a perspective view of thecoupling-bolt designed to clamp the cutter and plate to the cylinder. Fig. 3 is a perspective of the cylinder-head, showing both the balancing-block and cutter attached thereto.

A is a slotted square cylinder, which is secured to the axle B in the usual way.

G is the cutter-plate, the length of which should not exceed the width of the side of the cylinder on which it is placed, and its width that of the cutter which rests upon it. Its weight and strength are adapted to the work to be performed, a light out requiring a light plate, and a heavier cut a heavier plate. In its center, directly over the slotted of the cylinder A, when it is in position, is a rectangular opening, a.

D represents a rectangular slotted doublenovelty cutter designed to rest upon the plate 0, the slot (Z being of the same width as that of the opening a in the plate 0.

E is a coupling-bolt, having its head a so groove J No model.)

ted groovef of the cylinder.

h is a rectangular or square projection, 'jso placed on the bolt E that when its head 6 is inserted in the groove f and the bolt passed through the opening a in the plate 0 and the slot d of the cutter D the projection it shall exactly fill the opening a and the slot d di- .rectlyabove it, care being taken that the thickness of the projection h shall be slightly less than that of both the plate and the cutter, in order that when the nut g and its washer are screwed down the lower face of the washer, or of the nut if a washer is not used, shall rest tightly upon the upper face of the cutter, and thus rigidly secure both the plate and cutter to the cylinder.

It is apparent that any form or style of cutter maybe used which is adapted to a cutterplate similar to that shown in the drawings.

Thus constructed, when the nut is turned down to place, it is impossible to turn or twist either the plate or cutter out of line with the cylinder, either in the act of setting or working the same, inasmuch as the bolt E cured to the cylinder by reason of its head (1 closely fitting the groovef, and its projection h fills the opening a of the plate and slot (1 of the cutter.

To vary the position of the plate or cutter the nut g is loosened, which enables the operator to readily move the plate lengthwise oi the cylinder and the cutter forward or back, without moving either out of line on the cylinder, whatever maybe the haste or care used in the operation. Then by turning down the nut the cutter and plate are rigidlysecared to the cylinder.

The width of the plate and cutter may be even that of the length of the cylinder, if desired, in which event two or more couplingbolts with corresponding openingsin the plate and slots in the cutter will be required.

As it often becomes necessary to balance the cutter upon the cylinder, I have provided the balance-block M, (shown in Fig. 3,) and which can be conveniently and rigidly secured to the side of the cylinder, directly opposite to the cutter D, by means of the couplingbolt E. 011 the under side of this block is formed formed as to slide into an a flange, 0, which catches in the groove f of the head A, for the purpose of preventing the d closely lit the slot-- is firmly seblock from turning around. This block has its ends beveled, and is made heavy enough to balance the cutter on the other side, and

. thus keep the cylinder-head perfectly true as l l l bolt E, having the rectangular projection h and nut g, substantially as shown and described. 20

2. The combination of the grooved cylinderhead,- and a plate and cutter applied thereto, with the coupling-bolt- E, having its head 6 formed to fit the groove f in the cylinder A, and the rectangular projection h,to fit the aperture a in the plate and slot (1 in the cutter, substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS FITZSIMMONS.

Witnesses: WILL J. MURPHY, CHARLES E. ALLEN. 

